Need more information.
Firstly you're not in LMR, LMR is when she's in bed with you but you said your just starting out so it's all good. You're still in comfort building and now you're moving into seduction.
question1: You have a gf? If so why are you trying to get this girl?
question2: Why would you invite her over for a tantric massage? That's way to much commitment. Invite her over for a movie and then while she's there offer to show her something in your room. Take her out of the room. Grab a coffee and then maybe offer a tantric massage. Ease the girl into it.
Basically give her some space and drop back down into A2/A3 for a lil while. Tell her maybe you both moved a little fast or just disqualify yourself in some way. Something light hearted and easy. Take all the pressure off. Go out have fun with her. Invite some friends out play some laser tag or something stupid.
And build some natural chemistry
Let me know how this turns out.
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